{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.3782, -72.5914)",
 "slug": "discovered-lane-43-3782-72-5914",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.88369337854181,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 561.0,
   "end_distance_m": 563.0,
   "start_elevation_m": 453.5988850202058,
   "end_elevation_m": 454.3965588877766,
   "min_gradient_pct": -1.2164294239966011
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 36.32862244385061,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 560.0,
   "end_distance_m": 563.0,
   "start_elevation_m": 453.3067002144611,
   "end_elevation_m": 454.3965588877766,
   "min_gradient_pct": 0.10877495731544211
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.40835946608968,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 560.0,
   "end_distance_m": 565.0,
   "start_elevation_m": 453.3067002144611,
   "end_elevation_m": 454.9271181877656,
   "min_gradient_pct": 0.7492978611708168
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 31.180093857576026,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 102.0,
   "end_distance_m": 112.0,
   "start_elevation_m": 366.73803442706463,
   "end_elevation_m": 369.85604381282224,
   "min_gradient_pct": 1.9188375158307736
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 29.818088085893066,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 96.0,
   "end_distance_m": 116.0,
   "start_elevation_m": 365.03585905430276,
   "end_elevation_m": 370.9994766714814,
   "min_gradient_pct": 4.302257697519849
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 29.09714774101826,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 98.0,
   "end_distance_m": 123.0,
   "start_elevation_m": 365.5798368250956,
   "end_elevation_m": 372.85412376035015,
   "min_gradient_pct": 4.450538577869111
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 26.186931405392556,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 91.0,
   "end_distance_m": 141.0,
   "start_elevation_m": 363.810348620213,
   "end_elevation_m": 376.9038143229093,
   "min_gradient_pct": 5.946115406066497
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 25.047896813818966,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 93.0,
   "end_distance_m": 193.0,
   "start_elevation_m": 364.27191530052517,
   "end_elevation_m": 389.31981211434413,
   "min_gradient_pct": 11.34793218812888
  }
 ],
 "shape": {
  "ascent_concentration": 0.325,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 317.0,
  "shape_class": "sustained"
 },
 "length_m": 701.5207633417876,
 "start_elevation_m": 348.4302358241088,
 "end_elevation_m": 473.6328473144618,
 "endpoint_gain_m": 125.20261149035298,
 "overall_gradient_pct": 17.84731372652944,
 "accumulated_ascent_m": 125.26319933872998,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.40835946608968,
   "start_distance_m": 560.0,
   "end_distance_m": 565.0,
   "midpoint_distance_m": 562.5,
   "start_elevation_m": 453.3067002144611,
   "end_elevation_m": 454.9271181877656,
   "start_xy": [
    695357.4949413623,
    4805486.139105311
   ],
   "end_xy": [
    695361.3516131938,
    4805482.9569547195
   ]
  },
  "max_10m": {
   "gradient_pct": 31.180093857576026,
   "start_distance_m": 102.0,
   "end_distance_m": 112.0,
   "midpoint_distance_m": 107.0,
   "start_elevation_m": 366.73803442706463,
   "end_elevation_m": 369.85604381282224,
   "start_xy": [
    694982.9409233938,
    4805588.20013507
   ],
   "end_xy": [
    694992.4278210368,
    4805585.038051403
   ]
  },
  "max_20m": {
   "gradient_pct": 29.818088085893066,
   "start_distance_m": 96.0,
   "end_distance_m": 116.0,
   "midpoint_distance_m": 106.0,
   "start_elevation_m": 365.03585905430276,
   "end_elevation_m": 370.9994766714814,
   "start_xy": [
    694977.2923997903,
    4805590.205016844
   ],
   "end_xy": [
    694996.4071452192,
    4805585.003447117
   ]
  },
  "max_25m": {
   "gradient_pct": 29.09714774101826,
   "start_distance_m": 98.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 110.5,
   "start_elevation_m": 365.5798368250956,
   "end_elevation_m": 372.85412376035015,
   "start_xy": [
    694979.1461643367,
    4805589.464968536
   ],
   "end_xy": [
    695003.4051458581,
    4805585.170740447
   ]
  },
  "max_50m": {
   "gradient_pct": 26.186931405392556,
   "start_distance_m": 91.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 116.0,
   "start_elevation_m": 363.810348620213,
   "end_elevation_m": 376.9038143229093,
   "start_xy": [
    694972.7864186318,
    4805592.372073327
   ],
   "end_xy": [
    695019.5549073963,
    4805592.495194346
   ]
  },
  "max_100m": {
   "gradient_pct": 25.047896813818966,
   "start_distance_m": 93.0,
   "end_distance_m": 193.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 364.27191530052517,
   "end_elevation_m": 389.31981211434413,
   "start_xy": [
    694974.5888110952,
    4805591.505250733
   ],
   "end_xy": [
    695056.3000708347,
    4805629.227257069
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.7492978611708168,
   "start_distance_m": 639.0,
   "end_distance_m": 644.0,
   "midpoint_distance_m": 641.5,
   "start_elevation_m": 468.7995262955209,
   "end_elevation_m": 468.8369911885794,
   "start_xy": [
    695428.3767511196,
    4805461.31494757
   ],
   "end_xy": [
    695432.9027834606,
    4805459.19008728
   ]
  },
  "min_10m": {
   "gradient_pct": 1.9188375158307736,
   "start_distance_m": 636.0,
   "end_distance_m": 646.0,
   "midpoint_distance_m": 641.0,
   "start_elevation_m": 468.69776100885105,
   "end_elevation_m": 468.8896447604341,
   "start_xy": [
    695425.661131715,
    4805462.589863743
   ],
   "end_xy": [
    695434.713196397,
    4805458.340143165
   ]
  },
  "min_20m": {
   "gradient_pct": 4.302257697519849,
   "start_distance_m": 654.0,
   "end_distance_m": 674.0,
   "midpoint_distance_m": 664.0,
   "start_elevation_m": 469.5854892646553,
   "end_elevation_m": 470.44594080415925,
   "start_xy": [
    695439.6399808236,
    4805452.21313139
   ],
   "end_xy": [
    695450.9680897527,
    4805435.730596752
   ]
  },
  "min_25m": {
   "gradient_pct": 4.450538577869111,
   "start_distance_m": 637.0,
   "end_distance_m": 662.0,
   "midpoint_distance_m": 649.5,
   "start_elevation_m": 468.75730355375435,
   "end_elevation_m": 469.86993819822163,
   "start_xy": [
    695426.5663381832,
    4805462.164891685
   ],
   "end_xy": [
    695444.1712243953,
    4805445.620117535
   ]
  },
  "min_50m": {
   "gradient_pct": 5.946115406066497,
   "start_distance_m": 632.0,
   "end_distance_m": 682.0,
   "midpoint_distance_m": 657.0,
   "start_elevation_m": 468.34266763197775,
   "end_elevation_m": 471.315725335011,
   "start_xy": [
    695422.0403058423,
    4805464.289751974
   ],
   "end_xy": [
    695455.4993333243,
    4805429.137582897
   ]
  },
  "min_100m": {
   "gradient_pct": 11.34793218812888,
   "start_distance_m": 601.0,
   "end_distance_m": 701.0,
   "midpoint_distance_m": 651.0,
   "start_elevation_m": 462.268078837777,
   "end_elevation_m": 473.6160110259059,
   "start_xy": [
    695391.4579084715,
    4805467.277499433
   ],
   "end_xy": [
    695466.2610368069,
    4805413.479174991
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.88369337854181,
   "start_distance_m": 561.0,
   "end_distance_m": 563.0,
   "midpoint_distance_m": 562.0,
   "start_elevation_m": 453.5988850202058,
   "end_elevation_m": 454.3965588877766,
   "start_xy": [
    695358.2662757286,
    4805485.502675192
   ],
   "end_xy": [
    695359.8089444612,
    4805484.229814956
   ]
  },
  "max_3m": {
   "gradient_pct": 36.32862244385061,
   "start_distance_m": 560.0,
   "end_distance_m": 563.0,
   "midpoint_distance_m": 561.5,
   "start_elevation_m": 453.3067002144611,
   "end_elevation_m": 454.3965588877766,
   "start_xy": [
    695357.4949413623,
    4805486.139105311
   ],
   "end_xy": [
    695359.8089444612,
    4805484.229814956
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/vt/USGS_1M_18_x69y481_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-08-24T20:27:51+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/vermont-260821.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "redo-vt-1-260824",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, VT_Statewide_A23 (collected 2023)",
  "elevation_tile_ids": [
   "x69y481"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 22.3% over 200 m (Terrain 50), gain 125.4 m over 702 m way. KEPT at seed extent: no ascending continuation (min_avg=2.0%). ADOPTED (NE wave 1, 2026-08-25): clean-steep,qualified-steep. Wales dials per PRODUCTION 'US ADOPTION DIALS'.",
  "canopy_check": "unavailable \u2014 EPT corridor failed: VT_Statewide_2_A23: no EPT nodes intersect the corridor; VT_Statewide_1_A23: no EPT nodes intersect the corridor",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Cavendish",
  "county": "Vermont"
 }
}